Wikipedia defines common sense as “knowledge, judgement, and taste which is more or less universal and which is held more or less without reflection or argument”
Try to avoid using this topic to express niche or unpopular opinions (they’re a dime a dozen) but instead consider provable intuitive facts.
The best way to actually figure out directions is to learn how the sky works. It’s not complicated, really - stars stay in the same place, the sun and moon slowly move along the ecliptic (a specific big circle), and it all spins around the poles with the time of day.
Although, I’ve heard you actually can use moss for packing wounds, since it’s pretty absorbent.